Surface XAFS - New Aspects of its Application in the StructuralStudy of Adsorption Phenomena

The use of surface XAFS for exploring new aspects of the structural study of the adsorption of atoms and molecules on solid surfaces is discussed. Three examples are considered: the chemisorption at step sites, the dynamical properties of the bonding between ad-atoms and substrates, and the adsorption of organic molecules on metal surfaces.